To do so, first open System Preferences (from the Apple menu or the Dock) and click Desktop & Screen Saver. You probably know that you can change your Mac’s wallpaper-that is, the image or color on your Desktop. Even better, you can just click an album to get the music started. The iTunes Artwork screensaver fills your Mac’s display with the covers of your albums. You’ll notice that the different albums change at random, one at a time. As a bonus, if you spot an album you want to play, you can hover your cursor over its artwork and click to start the music. Click the Preview section of the preference pane to see the screensaver in action.